Are you sure you're providing a valid connection string property? The latest
source code contains this code:
// Sadly, your connection string is bad.
ErrorHandler.Error("Could not open database connection [" +
resolvedConnectionString + "]. Connection string context [" +
connectionStringContext + "].", e);
which seems to match your error message.
Can you paste your appender node to the list?
________________________________
From: Gary Cooper <lewd_revel...@yahoo.co.uk>
To: Log4NET User <log4net-user@logging.apache.org>
Sent: Thursday, May 21, 2009 4:57:14 PM
Subject: Re: Key cannot be null error
Thanks for your replies Karim & Radovan.
I have attempted to track down the problem with the log4net source, but this
doesnt seem to have yielded much success. I am thinking that this could
possibly be an error with MySql connector as opposed to log4net, after all this
doesnt seem to be happening with SQL Server or Oracle (or at least it isnt
being reported).
Karim, I think I followed your example on DevShed concerning this setup, I
would like to thankyou for putting that together and I look forward to reading
your blog article on this, I hope one of us will be able to overcome this
problem - unfortunately, I dont have access to another DB to test this out on,
but it would be nice to hear back from someone using the same code with Oracle
or SQL Server.
________________________________
From: Karim Bourouba <kar...@hotmail.com>
To: log4net-user@logging.apache.org
Sent: Thursday, 21 May, 2009 11:52:56
Subject: RE: Key cannot be null error
Hi Radovan,
thats a great idea, I will give it a go and report back. Many thanks
________________________________
Subject: RE: Key cannot be null error
Date: Thu, 21 May 2009 12:43:15 +0200
From: ras...@hasam.cz
To: log4net-user@logging.apache.org
Hello,
you can try this:
download log4net sources and attach them to your project instead of reference
to log4net.dll. Now you'll be able to debug inside of AdonetAppender and you
can find what exactly is null and guess the correct value, I hope.
Radovan Raszka
________________________________
Od: Karim Bourouba [mailto:kar...@hotmail.com]
Odesláno: 21. května 2009 10:43
Komu: log4net-user@logging.apache.org
Předmět: RE: Key cannot be null error
Hi Gary,
I am actually having the same problem as you - I think. I definitely get the
same error as you. Can I ask if you are using MySql at all?
Unfortunately though, I havent had any luck with asking this question on this
list, it would appear that the list is not as busy as I thought it initially
was, or the other subscribers are unable to comment.
To help you with your problem, if it isnt the same as mine, would be to post
your code on the list itself. That gives everyone the chance to take a look and
see if they can spot the issue.
If you do have the same problem as me, could you post your solution should you
fix it? That way others, including myself will be able to resolve this in
future.
________________________________
Date: Wed, 20 May 2009 22:02:14 +0000
From: lewd_revel...@yahoo.co.uk
Subject: Key cannot be null error
To: log4net-user@logging.apache.org
Hello,
Could someone explain to me what the following error means please?
log4net:ERROR [AdoNetAppender] Could not open database connection []
System.ArgumentNullException: Key cannot be null.
Parameter name: key
I encounter this error when trying to log to my database. The rows are updated,
but I get this message pop up on the console. I dont know how busy this list
is, but I would really appreciate it if someone could lend a hand.
TIA
________________________________
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